The Catalina Yachts Catalina 34 MkI - Wing Keel 1985 vs Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 measures 38,8 feet overall (2001), giving it roughly 4,2 additional feet of deck space compared to the Catalina Yachts Catalina 34 MkI - Wing Keel 1985 at 34,6 feet (1985). Weight tells a clearer story for trailering families: the Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 tips the scales at 18 874 lbs — 6 341 lbs less than the Catalina Yachts Catalina 34 MkI - Wing Keel 1985 at 12 533 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling — 30 hp for the Catalina Yachts Catalina 34 MkI - Wing Keel 1985 and 40 hp for the Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 is rated for 11 passengers, while the Catalina Yachts Catalina 34 MkI - Wing Keel 1985 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 displaces 18 874 lbs — a 6 341-lb difference over the Catalina Yachts Catalina 34 MkI - Wing Keel 1985 at 12 533 lbs. That gap separates two entirely different categories of sailing: the heavier boat is built for offshore passage-making and load-carrying, while the lighter hull rewards performance sailing and easier handling in lighter air.
Draft is a practical consideration that many buyers underestimate until they're already at the marina. The Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 draws 7,2 ft, compared to 4,4 ft for the Catalina Yachts Catalina 34 MkI - Wing Keel 1985. That 2,8-foot difference affects which anchorages you can access, which haul-out facilities will take you, and how carefully you need to read the tide tables in shallower cruising grounds.
The Catalina Yachts Catalina 34 MkI - Wing Keel 1985 uses Sloop rigging. For auxiliary power the Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 carries a 40-hp engine against 30 hp on the Catalina Yachts Catalina 34 MkI - Wing Keel 1985. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
Hull speed is rated at 7,6 knots for the Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 and 7,3 knots for the Catalina Yachts Catalina 34 MkI - Wing Keel 1985.
Bottom line: The Catalina Yachts Catalina 390 - Fin Keel Fin Keel 2001 is the offshore and bluewater choice — at 18 874 lbs displacement and 39 ft it has the load capacity, range, and seakeeping for extended passages. The Catalina Yachts Catalina 34 MkI - Wing Keel 1985 at 12 533 lbs is the more nimble, accessible option — easier to single-hand and better suited to coastal and inland sailing.